2212021220202 has 24 divisors (see below), whose sum is σ = 5074636917636. Its totient is φ = 693967441536.

The previous prime is 2212021220191. The next prime is 2212021220209. The reversal of 2212021220202 is 2020221202122.

2212021220202 is a `hidden beast` number, since 221 + 2 + 0 + 21 + 220 + 202 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2108330136081 + 103691084121 = 1452009^2 + 322011^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2212021220209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3614413453 + ... + 3614414064.

Almost surely, 2^{2212021220202} is an apocalyptic number.

2212021220202 is an abundant number, since it is smaller than the sum of its proper divisors (2862615697434).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2212021220202 is a wasteful number, since it uses less digits than its factorization.

2212021220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7228827542 (or 7228827539 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2212021220202 its reverse (2020221202122), we get a palindrome (4232242422324).

The spelling of 2212021220202 in words is "two trillion, two hundred twelve billion, twenty-one million, two hundred twenty thousand, two hundred two".